TFT-LCD yog ib qho khoom siv tsis tseem ceeb rau cov khoom lag luam. Tam sim no, feem ntau TFT-LCDs muaj cov haujlwm kov. Txawm hais tias hauv MCU lossis SOC (MPU), kev siv cov ntxaij vab tshaus kov yog ntau heev. Kov npo LCDs feem ntau muab faib ua ob hom: tiv thaiv kov npo thiab capacitive kov npo.
1.Cov tshuaj tiv thaiv kov siv qhov ntsuas siab rau kev tiv thaiv kev tiv thaiv kev tiv thaiv, uas yuav tsum muaj kev cuam tshuam ncaj qha rau kev ntxhov siab thiab nrhiav qhov chaw kov los ntawm kev txheeb xyuas qhov tsis kam. Lub ntsiab tseem ceeb yog ib qho kev tiv thaiv zaj duab xis uas phim rau saum npoo ntawm cov zaub zoo heev. Qhov no yog ib tug multi-layer composite zaj duab xis. Nws siv ib txheej ntawm iav los yog ib lub phaj yas nyuaj raws li lub hauv paus txheej, thiab saum npoo yog coated nrog ib txheej ntawm pob tshab oxide hlau (pob tshab conductive kuj) los ua hluav taws xob. Cov txheej yog them nrog ib tug hardened, du thiab khawb-resistant yas txheej sab nraud. Nws sab hauv nto kuj yog coated nrog ib txheej. Muaj ntau qhov me me (tsawg dua 1/1000 nti) pob tshab cais cov ntsiab lus ntawm lawv. Ob txheej txheej conductive cais cov rwb thaiv tsev. Thaum tus ntiv tes kov lub vijtsam, ob txheej txheej txheej txheej tuaj rau hauv kev sib cuag ntawm qhov taw tes kov, qhov kev hloov pauv hloov, thiab cov teeb liab raug tsim tawm hauv X thiab Y cov lus qhia, uas tau xa mus rau tus tswj lub vijtsam kov. Tus maub los kuaj xyuas qhov kev sib cuag no thiab suav qhov (X, Y) txoj haujlwm, thiab tom qab ntawd simulates tus nas ua haujlwm raws li txoj haujlwm tau txais. Qhov no yog lub hauv paus ntsiab lus tseem ceeb tshaj plaws ntawm resistive technology touch screen.
Qhov zoo ntawm cov ntxaij vab tshaus tiv thaiv: siab raug, tus nqi qis, muaj peev xwm tiv thaiv kev cuam tshuam, thiab kev ruaj ntseg zoo.
Qhov tsis zoo ntawm cov ntxaij vab tshaus kov: lawv tau yooj yim khawb, muaj lub teeb xa hluav taws xob tsis zoo, thiab tsis txhawb ntau qhov kov. (Yuav tsum tau kho qhov yooj yim, txwv tsis pub qhov offset yuav tsis me me)
2.Capacitive kov npo. Niaj hnub no, yuav luag txhua lub xov tooj ntse, suav nrog cov ntsiav tshuaj, siv cov ntxaij vab tshaus capacitive ua cov ntxaij vab tshaus. Capacitive cov ntxaij vab tshaus siv tib neeg lub cev induction rau kev tiv tauj thiab tswj. Lawv tsis xav tau kev sib cuag ncaj qha lossis tsuas yog xav tau kev sib cuag me ntsis xwb. Lawv ntes cov induced tam sim no. Nrhiav qhov kov coordinates. Muaj ob lub ntsiab ntawm capacitive touch screens:
Thawj yog qhov screen capacitive touchscreen. Nto capacitive touch screen technology siv ITO (indium tin oxide, cov khoom siv pob tshab) conductive zaj duab xis kom nkag siab tus cwj pwm ntawm qhov screen los ntawm hluav taws xob induction. Tab sis qhov screen capacitive touchscreens muaj qee qhov kev txwv. Lawv tsuas paub ib tus ntiv tes lossis ib qho kov xwb. (tsawg siv)
Qhov thib ob yog qhov projected capacitive touch screen. Projected capacitive kov cov ntxaij vab tshaus yog cov sensors uas siv lub vijtsam kov electrodes los tawm cov kab hluav taws xob hauv teb. Feem ntau siv nyob rau hauv projected capacitive sensing technology.
Qhov zoo ntawm lub vijtsam kov capacitive: kev xav zoo, tsis xav tau calibration, kev txhawb nqa rau ntau qhov kov, thiab lub teeb pom kev zoo.
Qhov tsis zoo ntawm cov ntxaij vab tshaus capacitive: tus nqi siab, tsis muaj qhov tseeb, thiab tsis muaj peev xwm tiv thaiv kev cuam tshuam.
Cim npe nrov: Tuam Tshoj TFT kov screen lwm tus neeg, Hoobkas
